Home / 920,521.29-1,380,991.06-280,882.22

Finding the Fourth Proportional to 920,521.29, 1,380,991.06 and 280,882.22

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Solution

The fourth proportional to 920,521.29, 1,380,991.06 and 280,882.22 is: 421,387.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,521.29 : 1,380,991.06 = 280,882.22 : x
  2. Step 2: Convert to fraction form
    920,521.29/1,380,991.06 = 280,882.22/x
  3. Step 3: Cross multiply
    920,521.29x = 1,380,991.06 × 280,882.22
  4. Step 4: Simplify right side
    920,521.29x = 387,895,833,610.15
  5. Step 5: Solve for x
    x = 387,895,833,610.15/920,521.29
  6. Step 6: Final answer
    x = 421,387.14

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.